Subroutine in the programming
Describe the number of ways that an argument is passed to a subroutine in the programming?
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The argument can be passed in two ways in the programming language. They are Pass by Value and Passing by Reference.
Passing by value: This process copies the value of an argument to the formal parameter of the subroutine.
Passing by reference: In this process, a reference to an argument (not the value of argument) is passed to the parameter.
Number of Threads: Threads can be a useful abstraction and implementation mechanism to partition independent program actions. However, when there is coordination (or interference) between these threads, the required synchronization mechanisms increase
Define the term Nested class: It is a class stated within an enclosing class.
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File system: The operating system makes it possible to utilize space on a computer's disk drives by imposing a structured file system on disk storage. Each and every file system contains its own conventions for the manner in which the files are named,
Exception handler: It is a try statement which acts as an exception handler - a place where exception objects are dealt and caught with.
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Try statement: The try statement performs as an exception handler - a position where exception objects are caught and dealt with. In its most common form, it comprises of a try clause, one or more catch clauses and the finally clause.
Explain Downcast with example: It is a cast towards an object's dynamic kind - that is, `down' the inheritance hierarchy. For illustration: // Downcast from Object to String
Write the index value of the initial element in an array?
Define the term Dynamic type: This type of an object is the name of the class employed to construct it.
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